Adults who routinely get less than six hours of shut-eye a night are four times more likely to suffer a stroke, compared with people getting seven or eight hours, according to a study recently presented at the SLEEP 2012 …

If you’ve ever ended up at a greasy diner ravenous at 4 in the morning, this will come as no surprise: new studies find that a sleepy brain is more drawn to junk food than a well-rested one, and that it’s also less equipped to …

Sleep time is not wasted time, least of all for the creative. At night, the brain is a lot more active than it seems, sometimes producing bursts of creative inspiration: music, literature, scientific insights. What follows are …